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| | | | Joined: Jun 2000 Posts: 90 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 90 | What's the easiest way to determine the gear ratio in late 1930s axles? The 1/2-tons could have the standard 37-9 (4.11) ratio or an optional 42-11 (3.82) ratio.
My 1937 shop manual mentions serial numbers stamped on differential carrier, with the optional 3.82 axle having an "F" prefix. Does this always hold true and where is the stamp supposed to be located?
1959 Chevrolet 3800 Pickup
1937 Chevrolet GC Panel
Can you still call it a barn find if it's your barn? | | | | | Joined: Mar 2006 Posts: 319 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 319 | This page on 1937 serial numbers from the Keith Hardy site answers the basics on rear axle serial numbers. Hope this helps. http://chevy.oldcarmanualproject.com/chevyresto/3702.htm
"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson
| | | | | Joined: Jul 2005 Posts: 581 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 581 | Spin the tire 1 revolution and count the turns on the drive shaft. | | |
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